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Alexxx [7]
3 years ago
6

Can you solve : 7x - 4 = 2

Mathematics
2 answers:
Zolol [24]3 years ago
8 0
7x-4=2
add 4 to both sides
7x=2+4
7x=6
divide 7 to both sides
x=6/7
zzz [600]3 years ago
6 0
Your answer will be 6/7
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Find all real solutions and show work: <br> 2x^3-3x^2+18x-27=0
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Given:

The given equation is

2x^3-3x^2+18x-27=0

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All the real solutions.

Solution:

We have,

2x^3-3x^2+18x-27=0

It can be written as

x^2(2x-3)+9(2x-3)=0

(2x-3)(x^2+9)=0

Using zero product property, we get

(2x-3)=0 and (x^2+9)=0

2x=3 and x^2=-9

x=\dfrac{3}{2} and x=\pm\sqrt{-9}

We know that x=\pm\sqrt{-9} is an imaginary number because there is a negative sign under the square root.

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Pls. see attachment. 

We need to solve for the angles of the smaller triangle in order to solve for the angle of the larger triangle which would help us solve the missing measurement of a side.

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51 degrees.

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Angle Q is 78 degrees.

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